Guide for the engagement of stud carrying collars on a grooved shaft



STUD CARRYING SHAFT 960 fiyen/ MM] 1 .I I R 2 2 7 7 B1 54/687 1 mm .m jIi. C

UIDE FOR THE ENGAGEMENT OF COLLARS ON A GROOVED Aprii 18, 1961G andGUIDE FOR TI-E ENGAGEMENT OF STUD CAR- RYING 'CULLARS ON A GROOVED SHAFTCharles Labrie, 278 Cousineau St., Pont Viau, Quebec, Canada Filed Apr.22, 1960, Ser. No. 24,059

6 Claims. or. 242-681) The present invention relates to guiding meansfor facilitating the insertion of stud carrying collars on alongitudinally grooved shaft.

For winding tape, such as adhesive tape and the like,

on cardboard rings, a winder is used which comprises essentially arotary shaft provided with a longitudinal groove. The cardboard ringsare inserted on said shaft with the interposition of metal spacer ringsor collars I provided with an inwardly directed stud engaging the groovewhereby said spacer rings serve to drive the cardboard rings for windingthe tape thereon. 'When adhesive tape is wound, two winder shafts areused and the sheet of adhesive is first cut and the strips arealternatively wound on the cardboard rings of the two shafts in order toprevent sticking of the edges of the adjacent strips.

When the winding is comp eted, a tightening screw is unscrewed from oneend of the shaft and the spacer collars and reels of tape are removedfrom the shaft and the col lars and new cardboard rings are reinsertedon the shaft. However, each collar has to be rotated by hand to bringits stud into alignment with the longitudinal groove of the shaft inorder to insert the collar on the shaft. This is a time consumingoperation.

The main object of the present invention resides therefore in theprovision of guiding means which will automatically align the studs ofthe collars with the longitudinal groove of the shaft and will thereforeconsiderably facilitate and accelerate stringing of the collars andcardboard rings for the Winding operation.

Another important object of the present invention resides in theprovision of a guide of the character described Which form an integralpart of the Winding shaft.

Still another object of the present invention resides in the provisionof a guide of the character described which is removably adapted at oneend of the grooved shaft.

' Still another important object of. the present invention resides inthe provision of guiding means of the character described whichpositively prevent blocking or jamming I of the stud carrying collars onthe shaft during stringing.

The foregoing and other important objects of the present invention willbecome more apparent during the following disclosure and by referring tothe drawings, in which:

Figure 1 is a front elevational view of a grooved shaft provided withthe guiding means of the invention;

Figure 2 is a side elevation of the same shaft;

Figure 3 is a longitudinal section along line 3--3 of Figure l;

Figure 4 is a back elevation of the same shaft;

Figure 5 is an elevation of the complete shaft provided with the guidingmeans of the invention and showing an assembly of stud carrying collarsand cardboard rings thereon;

Figure 6 is an end View of the shaft of Figure 1 Figure 7 is across-section along line 7 7 of Figure 2;

Patented Apr. 18, 1961 Figure 8 is a front elevation of a guide inaccordance with the invention removably connected to a grooved shaft,partly broken away to show the threaded connection.

In the description and the accompanying drawings, the same referencecharacters indicate the same elements throughout. 7

Reference numeral 1 indicates a shaft provided with a longitudinallyextending groove 2 having a bottom and longitudinal sides 29 and 21. Aspreviously explained, it is desired to string in a rapid and easymannerthe spacer collars 3 made of metal and provided with an internallydirected tooth or stud 4, such that the stud will engage the groove 2,for rotation of collar 3by shaft '1. The outer end portion 5 ofshaft .1is of the same diameter as the bottom of-groove 2. The sides 26 and 21of groove 2 flare at the end of groove 2 adjacent end 5 of shaft 1 todefine inclined side portions 22 and 23 which extend spirally around theshaft tojoin at an apex 6 (see Figure 4) which lies on the linediametrically opposed to the longitudinal side 20 of groove 2. t

A raised lozenge shaped boss 7 is formed on the portion 5 of the shaft.The outer face of said lozenge is cylindrical and has the same diameteras shaftl; ,s'aid lozenge is elongated with its two opposed outer andinner apices 24 and 25respectively disposed along a longitudinal linealigned with the longitudinal side 20 of groove 2. Thus, the two innerinclined sides 26 and 27 of the lozenge 7 are disposed adjacent butspaced from inclined sides 22 and 23 of the groove such as to definetherewith a As shown in Figure 5, the shaft 1 is provided at its endopposite end 5 with a gear wheel 8 and with abutting nut 9, screwed onthe shaft.

In the use of-the invention, the shaft 1 is held vertically andcardboard rings 10 are strung alternatively with stud carrying metalcollars 3. The stringing is effected at the Upon stringing of thecollars 3, theirv stud 4 will pass between the apex 24 of the lozenge 7,and the apex 6 defined by sides 22 and 23; from then" end 5 of shaft 1.

on, the stud will beguided by sides 22 and 23 until the stud engages thestraight part of groove 2.

The lozenge 7 is necessary because it maintains the full diameter ofshaft 1 up to apices- 6 and 24, and thus prevent the collars 3 frombecoming inclined and wedging onvthe shaft, in the case where the stud 4would abut against apex 6.

Once all the collars 3 and cardboard rings 10 have been strung on theshaft, they are tightened one against the other by means of nut 11engaging threads (not shown) made on the portion 5 of the shaft, outsideof and adjacent lozenge 7. The shaft and assembled collars and rings maythen be placed in driving position in the winder. V l The eccentricposition of the inner apex 25 of lozenge 7 prevents the stud 4 frombutting against said apex when the collars 3 are unstrung after thewinding of the tape on cardboard rings 19.

In the modified form of the invention in accordance With'the presentinvention and sh own in Figure 8, the

. made'on shaft 12 adjacent nipple 13.; V V

Whiletpreferifed'embodiments in accordance with {the present inventionhavebeen illustrated and described, it

' isunderstood-thatvarious modifications may be resorted l-pended-claimsv M a What I'claimisc In this base, the shaft 12 has a threaded nipple13 cm gagingwith'a threaded socket made in the'guide 14 which 'forms aremovable prolongation or extensionjof V shaft 12;. Theipar t 14'hasagroove 15 which is aligned with the "groove' ofj sliatti l' {not shown)and which cor- 7 .ing sides for 'groove'lS and a lozenge 17corresponding to lozenge 7 of the first embodiment The outer end of"theggui'de 14 taperedasjshown at 16, to facilitate stringing of thedollars and'ring; Threads (not shown) correspond g to threads 11 ot thefirstembodiment are to without-departing'fron the spirit and scope ofthe ap- 7 said groove, said lozenge shaped boss having an outer and aninner apex disposed along a line parallel to said longitudinal groove. Vp

2. A guide as claimed in claim 1, wherein said lozenge shaped boss hasits apices laterally ofiset from the center of said groove. p 1 V 1 3. Aguide as-claimed in-claim 1, wherein the inclined side portions meetsaid longitudinal sides of saidtgroove at points unequally spaced fromthe adjacent inner apex of said lozenge shaped boss. V

4. A guide as claimedin'claim'lfwhereinthe apices V of said lozengeshaped'boss are aligned with the one lon- 1 Aguide for stringing studcarrying collars on a a longitudinally grooved shaftfcomprising a shaftsection vhavingra longitudinal groove with a bottom andlongitudinalsides, said sides flaring at one end'of said groove 'toform-inclined side'portions joining into a first apex at a point of theshaft. diametrically opposed to said gro0ve,z--the bottoin "of saidgroove defining a surface which/ extends between said inclined sideportions, and

a lozen'gesh'aped boss onsaidsurface disposed between said inclined sideportions andjdefining with saidinclined 7 sid'eirportions' and two'ofits own sides, a bifurcation of a gitudinal side of said groove themeeting point, of which, With the associated inclined side' portion 'isthe 'more distant from the adja'centjinner apex offsaid lozenge shapedboss. 7 1

5. A guide as claimed'in claim 1, wherein the outer apex of said lozengeshaped boss is: disposed in substantially' transverse alignment withsaid firstapex, v

6; A guide as claimed in claim 1, whereinrth e external surface of saidlozenge shaped boss is curved on a diameter equal to the diameter ofsaid shaft section.

References Cited in of this patent UNITED STATES :PAT ENT E S 12,290,403Wyss 7 2,302,237 McFall Nov. 17, 1942 2,953,639 ce kap n; Sept. 20, 1960

